Hi,
If you are interested in the correlation with another measure then you
can just add this as an extra EV and the statistics associated with this
EV will tell you whether there is a significant correlation (or relationship).
This would be easier than using the output from --savevertices.
See the webpage:
http://www.fmrib.ox.ac.uk/fsl/first/index.html#vertexana
for more information.
All the best,
Mark
On 18 Jun 2012, at 03:21, Chou Kun Hsien wrote:
> Dear Mark
>
> I want to ask for further question, can we calculate displacement distance of individual vertex data which derived from --savevertices flag ? For example,firstly, i performed the vertex analysis in hippocampus of Alzheimer's disease patient and normal control. In this analysis, i identified some vertices with significant shape change between two groups. After this vertex based analysis, I want to extract these significant difference vertices into correlation analysis to investigate the relationship between clinical evaluations and geometry properties. I think the displacement distance from mean surface (or model surface which available in FSL) may be a good indicator for such kind of investigation, could you give me some comments about which FSL commands can we use in this purpose ?
>
> Best
>
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